However, the typical inertness of unactivated Si-C(sp3) bondsunder conventional reaction conditions has hampered the application of simple tetraalkylsilanes in organic synthesis. Herein we report the chemoselective cleavage of Si-C(sp3) bonds of unactivated tetraalkylsilanes using iodine tris(trifluoroacetate). The reaction proceeds smoothly undermildconditions (-50 °C to room temperature) and tolerates
Réaction de quelques allènes avec l'hydrure de di-isobutyl-aluminium
作者:Michel Montury、Jacques Goré
DOI:10.1016/s0040-4039(00)93622-0
日期:1980.1
Reduction of the more substituted of the two double bonds of the allenic linkage can be selectively achieved by the reaction with DIBAH followed by hydrolysis.
通过与DIBAH反应然后水解,可以选择性地实现降低烯丙基键的两个双键的更多取代基。
REDUCTIVE SILYLATION REACTIONS OF SULFIDES. A FACILE CONVERSION OF CARBON-SULFUR LINKAGES INTO CARBON-SILICON ONES
作者:Isao Kuwajima、Toru Abe、Kunio Atsumi
DOI:10.1246/cl.1978.383
日期:1978.4.5
It has been found that various phenyl sulfides undergo reductivesilylation to afford the corresponding alkyltrimethylsilanes in good yield.
principal product formed is not the expected cyclic organosilicon (or organogermanium) fluoride but the compound resulting from a transannular substitution reaction at the heteroatom with cleavage of one intracyclic heteroatom-carbon bond. The structures of the derivatives obtained were determined by 19F NMR and, after methylation, by mass spectrometry, 1H and 13C NMR, and chemically.
奥拉试剂(HF-吡啶)在室温下容易与6,6-二甲基-6-sila-(和6,6-二甲基-6-germa-)-环十一烷醇反应。在每种情况下,形成的主要产物都不是预期的环状有机硅(或有机锗)氟化物,而是在杂原子上经环内取代反应并裂解一个环内杂原子-碳键而形成的化合物。所获得的衍生物的结构通过19 F NMR以及在甲基化之后通过质谱,1 H和13 C NMR以及化学方法来确定。
Diverse Alkyl–Silyl Cross-Coupling via Homolysis of Unactivated C(sp<sup>3</sup>)–O Bonds with the Cooperation of Gold Nanoparticles and Amphoteric Zirconium Oxides
the degradation of polyesters and the synthesis of organosilanes were realized concurrently by the unique catalysis of supported gold nanoparticles. Mechanistic studies corroborated the notion that the generation of alkyl radicals is involved in C(sp3)–Si coupling and the cooperation of gold and an acid–base pair on ZrO2 is responsible for the homolysis of stable C(sp3)–O bonds. The high reusability and